Which statement reflects an understanding of back injury prevention during lifting?

The statement "I shouldn't twist while lifting an object" demonstrates a solid understanding of back injury prevention techniques during lifting. Twisting the spine can place undue stress on the back, increasing the risk of injuries such as sprains or herniated discs. Proper lifting techniques emphasize the importance of maintaining a neutral spine position and using your legs for power instead of your back.

In contrast, the other choices illustrate common misconceptions about safe lifting practices. Keeping legs straight while lifting can lead to excessive strain on the back, as it removes the mechanical advantage that strong leg muscles offer. Holding heavy objects away from the body also places strain on your back, as the farther an object is from your center of gravity, the more effort is needed to maintain stability. Lastly, having a narrow base of support can compromise balance and stability during lifting, making it more likely that a person will injure themselves.